/* Like vsprintf but provides a pointer to malloc'd storage, which must
be freed by the caller.
- Copyright (C) 1994 Free Software Foundation, Inc.
+ Copyright (C) 1994-2021 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
-License along with libiberty; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+License along with libiberty; see the file COPYING.LIB. If not, write
+to the Free Software Foundation, Inc., 51 Franklin Street - Fifth
+Floor, Boston, MA 02110-1301, USA. */
-#ifdef __STDC__
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <ansidecl.h>
#include <stdarg.h>
-#else
-#include <varargs.h>
+#if !defined (va_copy) && defined (__va_copy)
+# define va_copy(d,s) __va_copy((d),(s))
#endif
#include <stdio.h>
+#ifdef HAVE_STRING_H
#include <string.h>
-#include <ansidecl.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#else
+extern PTR malloc ();
+#endif
+#include "libiberty.h"
+#include "vprintf-support.h"
#ifdef TEST
int global_total_width;
#endif
-unsigned long strtoul ();
-char *malloc ();
+/*
+
+@deftypefn Extension int vasprintf (char **@var{resptr}, @
+ const char *@var{format}, va_list @var{args})
+
+Like @code{vsprintf}, but instead of passing a pointer to a buffer,
+you pass a pointer to a pointer. This function will compute the size
+of the buffer needed, allocate memory with @code{malloc}, and store a
+pointer to the allocated memory in @code{*@var{resptr}}. The value
+returned is the same as @code{vsprintf} would return. If memory could
+not be allocated, minus one is returned and @code{NULL} is stored in
+@code{*@var{resptr}}.
+
+@end deftypefn
+
+*/
+
+static int int_vasprintf (char **, const char *, va_list);
static int
-int_vasprintf (result, format, args)
- char **result;
- const char *format;
- va_list *args;
+int_vasprintf (char **result, const char *format, va_list args)
{
- const char *p = format;
- /* Add one to make sure that it is never zero, which might cause malloc
- to return NULL. */
- int total_width = strlen (format) + 1;
- va_list ap;
-
- memcpy ((PTR) &ap, (PTR) args, sizeof (va_list));
-
- while (*p != '\0')
- {
- if (*p++ == '%')
- {
- while (strchr ("-+ #0", *p))
- ++p;
- if (*p == '*')
- {
- ++p;
- total_width += abs (va_arg (ap, int));
- }
- else
- total_width += strtoul (p, &p, 10);
- if (*p == '.')
- {
- ++p;
- if (*p == '*')
- {
- ++p;
- total_width += abs (va_arg (ap, int));
- }
- else
- total_width += strtoul (p, &p, 10);
- }
- while (strchr ("hlL", *p))
- ++p;
- /* Should be big enough for any format specifier except %s and floats. */
- total_width += 30;
- switch (*p)
- {
- case 'd':
- case 'i':
- case 'o':
- case 'u':
- case 'x':
- case 'X':
- case 'c':
- (void) va_arg (ap, int);
- break;
- case 'f':
- case 'e':
- case 'E':
- case 'g':
- case 'G':
- (void) va_arg (ap, double);
- /* Since an ieee double can have an exponent of 307, we'll
- make the buffer wide enough to cover the gross case. */
- total_width += 307;
- break;
- case 's':
- total_width += strlen (va_arg (ap, char *));
- break;
- case 'p':
- case 'n':
- (void) va_arg (ap, char *);
- break;
- }
- }
- }
+ int total_width = libiberty_vprintf_buffer_size (format, args);
#ifdef TEST
global_total_width = total_width;
#endif
- *result = malloc (total_width);
+ *result = (char *) malloc (total_width);
if (*result != NULL)
- return vsprintf (*result, format, *args);
+ return vsprintf (*result, format, args);
else
- return 0;
+ return -1;
}
int
-vasprintf (result, format, args)
- char **result;
- const char *format;
+vasprintf (char **result, const char *format,
#if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
- _BSD_VA_LIST_ args;
+ _BSD_VA_LIST_ args)
#else
- va_list args;
+ va_list args)
#endif
{
- return int_vasprintf (result, format, &args);
+ return int_vasprintf (result, format, args);
}
#ifdef TEST
-void
-checkit
-#ifdef __STDC__
- (const char* format, ...)
-#else
- (va_alist)
- va_dcl
-#endif
+static void ATTRIBUTE_PRINTF_1
+checkit (const char *format, ...)
{
- va_list args;
char *result;
-
-#ifdef __STDC__
+ va_list args;
va_start (args, format);
-#else
- char *format;
- va_start (args);
- format = va_arg (args, char *);
-#endif
vasprintf (&result, format, args);
- if (strlen (result) < global_total_width)
+ va_end (args);
+
+ if (strlen (result) < (size_t) global_total_width)
printf ("PASS: ");
else
printf ("FAIL: ");
printf ("%d %s\n", global_total_width, result);
+
+ free (result);
}
+extern int main (void);
+
int
-main ()
+main (void)
{
checkit ("%d", 0x12345678);
checkit ("%200d", 5);
checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
777777777777777777333333333333366666666666622222222222777777777777733333");
checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");
+
+ return 0;
}
#endif /* TEST */
projects / thirdparty / binutils-gdb.git / blobdiff